Some of the 70's 3/4ton 4x4s used the Dana 44HD which had the external 6 bolt mounting pattern. I am not for sure on the spline count though. The 77=87 hubs would be for the 10bolt with internal mounting. I have some of the original spicer hubs and some warn hubs for 3/4 ton 4x4s if your looking for those. Lyle
Last edited by 66Suburban; 02/05/2013 10:54 PM.
